25440299 has 2 divisors, whose sum is σ = 25440300. Its totient is φ = 25440298.

The previous prime is 25440271. The next prime is 25440307. The reversal of 25440299 is 99204452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25440299 - 2⁸ = 25440043 is a prime.

It is a Chen prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (25440229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12720149 + 12720150.

It is an arithmetic number, because the mean of its divisors is an integer number (12720150).

Almost surely, 2^25440299 is an apocalyptic number.

25440299 is a deficient number, since it is larger than the sum of its proper divisors (1).

25440299 is an equidigital number, since it uses as much as digits as its factorization.

25440299 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 25440299 is about 5043.8377253833. The cubic root of 25440299 is about 294.1083832274.

The spelling of 25440299 in words is "twenty-five million, four hundred forty thousand, two hundred ninety-nine".